Name: a yeast 2-hybrid screen in batch to compare protein interactions
Uploaded: 2018-06-06T14:30:00.000+00:00
Duration: 14 min 23 s
Description: Watch this Scientific Journal Video about A Yeast 2-Hybrid Screen in Batch to Compare Protein Interactions at JoVE.com

我们感谢人类遗传学研究所内的工作人员对图书馆的准备和测序。我们感谢 Einat Snir 在为这里制作的 Y2H 质粒库编写基因组文库片段方面的专长。这项工作得到国家卫生研究院的支持: NIH R21 EB021870-01A1 和 NSF 研究项目赠款: 1517110。

<ol>
	<li>Fields, S., Song, O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+novel+genetic+system+to+detect+protein-protein+interactions.">A novel genetic system to detect protein-protein interactions.</a> Nature. 340 (6230), 245-246 (1989).</li><li>Bruckner, A., Polge, C., Lentze, N., Auerbach, D., Schlattner, U. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Yeast+two-hybrid,+a+powerful+tool+for+systems+biology.">Yeast two-hybrid, a powerful tool for systems biology.</a> International Journal of Molecular Sciences. 10 (6), 2763-2788 (2009).</li><li>Vidal, M., Fields, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+yeast+two-hybrid+assay:+still+finding+connections+after+25+years.">The yeast two-hybrid assay: still finding connections after 25 years.</a> Nature Methods. 11 (12), 1203-1206 (2014).</li><li>Pashkova, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=DEEPN+as+an+Approach+for+Batch+Processing+of+Yeast+2-Hybrid+Interactions.">DEEPN as an Approach for Batch Processing of Yeast 2-Hybrid Interactions.</a> Cell Reports. 17 (1), 303-315 (2016).</li><li>Rajagopala, S. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mapping+the+Protein-Protein+Interactome+Networks+Using+Yeast+Two-Hybrid+Screens.">Mapping the Protein-Protein Interactome Networks Using Yeast Two-Hybrid Screens.</a> Advances in Experimental Medicine and Biology. 883, 187-214 (2015).</li><li>Weimann, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+Y2H-seq+approach+defines+the+human+protein+methyltransferase+interactome.">A Y2H-seq approach defines the human protein methyltransferase interactome.</a> Nature Methods. 10 (4), 339-342 (2013).</li><li>Yachie, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pooled-matrix+protein+interaction+screens+using+Barcode+Fusion+Genetics.">Pooled-matrix protein interaction screens using Barcode Fusion Genetics.</a> Molecular Systems Biology. 12 (4), 863 (2016).</li><li>Trigg, S. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=CrY2H-seq:+a+massively+multiplexed+assay+for+deep-coverage+interactome+mapping.">CrY2H-seq: a massively multiplexed assay for deep-coverage interactome mapping.</a> Nature Methods. , (2017).</li><li>Estojak, J., Brent, R., Golemis, E. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Correlation+of+two-hybrid+affinity+data+with+in+vitro+measurements.">Correlation of two-hybrid affinity data with in vitro measurements.</a> Molecular and Cellular Biology. 15 (10), 5820-5829 (1995).</li><li>Rajagopala, S. V., Hughes, K. T., Uetz, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Benchmarking+yeast+two-hybrid+systems+using+the+interactions+of+bacterial+motility+proteins.">Benchmarking yeast two-hybrid systems using the interactions of bacterial motility proteins.</a> Proteomics. 9 (23), 5296-5302 (2009).</li><li>James, P., Halladay, J., Craig, E. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genomic+libraries+and+a+host+strain+designed+for+highly+efficient+two-hybrid+selection+in+yeast.">Genomic libraries and a host strain designed for highly efficient two-hybrid selection in yeast.</a> Genetics. 144 (4), 1425-1436 (1996).</li><li>Barbas, C. F., Burton, D. R., Scott, J. K., Silverman, G. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantitation+of+DNA+and+RNA.">Quantitation of DNA and RNA.</a> CSH Protoc. 2007, pdb ip47 (2007).</li><li>Sambrook, J., Russell, D. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SDS-Polyacrylamide+Gel+Electrophoresis+of+Proteins.">SDS-Polyacrylamide Gel Electrophoresis of Proteins.</a> Cold Spring Harbor Protocols. 2006 (4), (2006).</li><li>Towbin, H., Staehelin, T., Gordon, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Electrophoretic+transfer+of+proteins+from+polyacrylamide+gels+to+nitrocellulose+sheets:+procedure+and+some+applications.">Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets: procedure and some applications.</a> Proceedings of the National Academy of Sciences USA. 76 (9), 4350-4354 (1979).</li><li>Alegria-Schaffer, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Western+blotting+using+chemiluminescent+substrates.">Western blotting using chemiluminescent substrates.</a> Methods in Enzymology. 541, 251-259 (2014).</li><li>Lee, P. Y., Costumbrado, J., Hsu, C. Y., Kim, Y. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Agarose+gel+electrophoresis+for+the+separation+of+DNA+fragments.">Agarose gel electrophoresis for the separation of DNA fragments.</a> Journal of Visualized Experiments. (62), (2012).</li><li>Harper, J. W., Adami, G. R., Wei, N., Keyomarsi, K., Elledge, S. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+p21+Cdk-interacting+protein+Cip1+is+a+potent+inhibitor+of+G1+cyclin-dependent+kinases.">The p21 Cdk-interacting protein Cip1 is a potent inhibitor of G1 cyclin-dependent kinases.</a> Cell. 75 (4), 805-816 (1993).</li></ol>

作者没有什么可透露的

在这里, 我们提供了如何使用优化方法在批处理中执行 Y2H 化验的指南。在这个过程中有几个关键步骤, 以帮助确保将被放置在选择下的酵母的人口是起始库的代表, 并且足够的开始酵母人口用于接受选择限制变异.重要的是, 这些基准相对容易实现, 同时适应传统的 Y2H 检测方法和材料, 从而使大多数实验室都能使用标准分子生物学的方法。在使用不同的诱饵质粒时, DEEPN 允许从相同的猎物库种群中进...

对细胞生物学过程的完全理解依赖于寻找其分子机制基础的蛋白质相互作用网络。一种识别蛋白质相互作用的方法是酵母 2-杂交 (Y2H) 法, 它通过组装一个功能的嵌合体转录因子, 一旦两个感兴趣的蛋白质领域绑定到另一个1。一个典型的 Y2H 屏幕是通过创建一个酵母种群, 它既可以将相互作用的蛋白质的质粒库编码成转录激活剂 (e. g, "猎物" 融合蛋白) 和由蛋白质组成的给定的 "诱饵" 质粒。的兴趣融合到 dna 绑定域 (例如, 绑定到 Gal4-upstream 激活序列的 Gal4 DNA 绑定域)。Y2H 方法的一个主要优点是, 在为常规分子生物学工作配备的典型实验室中, 进行2是相对容易和廉价的。但是, 当传统上执行时, 用户会对在选择时出现的单个菌落进行正面 Y2H 交互的采样。这严重限制了可以调查的图书馆 "猎物" 克隆的数量。当一个特定的相互作用的猎物的丰度相对于其他捕食者非常高时, 这一问题就会复杂化, 从而减少了从低丰度猎物质粒中检测相互作用的几率。
在蛋白质组的综合覆盖范围内使用 Y2H 原理的一个解决方案是使用矩阵格式化的方法, 其中包含已知单个猎物质粒的阵列可以进行数字审问。但是, 这种方法需要的基础结构对于那些有意定义少量蛋白质或域3的 interactome 的个体调查人员来说是不容易接近或成本效益高的。此外, 非常复杂的猎物库, 可能编码多个相互作用的蛋白质片段, 将扩大这种矩阵数组的大小不切实际的大小。另一种方法是在批次中执行复杂库的检测, 并使用大规模并行高通量排序4评估交互克隆的存在。这可以用来检测在多个殖民地出现的猎物质粒的存在, 使用典型的 Y2H 格式化的方法, 其中酵母细胞外壳的相互作用对融合蛋白被允许生长在一个板块5,6。这一总体思路可以增强, 以增加对多个诱饵和猎物组件的查询, 同时7,8。
尽管如此, 许多调查还是需要更简单、更专注于少量蛋白质 "诱饵" 的努力, 并且可以通过对单个复杂的猎物库进行详尽而半定量的查询来获得更多的好处。我们已经开发并验证了一种使用 Y2H 原则在批处理格式4中执行广泛的蛋白质交互研究的方法。这使用特定的猎物质粒的膨胀率作为 Y2H 交互作用的相对强度的代理9。在正常生长或选择性生长条件下, 在种群内的所有质粒的深度测序生成完整的克隆, 产生强弱的 Y2H 相互作用。interactors 可以在多个诱饵质粒中得到和直接比较。由此产生的工作流称为 DEEPN (对蛋白质网络进行动态富集评估), 因此可以用来识别同一个猎物库中的差异 interactomes, 以确定蛋白质, 从而使一种蛋白质与另一种蛋白进行比较。
在这里, 我们演示了 DEEPN, 并介绍了有助于其使用的实验室方法的改进, 其中概述了图 1。重大改进包括:
捕食酵母种群的生成.DEEPN 的关键要求之一是产生不同饵料质粒的酵母种群, 它们的粒细胞分布相同。捕食质粒库的等效基线种群对不同饵料的 interactomes 进行精确比较是必不可少的。这是最好的实现, 当一个图书馆的质粒已经安置在单倍体酵母种群和移动一个给定的诱饵质粒进入该人群是通过交配产生一个倍。在这里, 我们提供了一个明确的指南, 如何使这些人口使用的商业图书馆在单倍体酵母。虽然我们发现了产生大量 diploids 的方法, 但这些含有酵母菌的商业文库的整体交配效率却很低。因此, 我们构造了一种新的应变, 可以使猎物库产生更 diploids 的每一个交配反应。
新的诱饵质粒集。许多目前表达 "诱饵" 融合蛋白的质粒是由感兴趣的蛋白质和 DNA 结合的领域组成的, 2µ, 允许它们放大其拷贝数。这个拷贝数在人口中可能是相当可变的并且导致变异在 Y2H 转录反应。这反过来可能会扭曲的能力, 以衡量一个特定的蛋白质相互作用的强度, 根据细胞的生长反应的选择。这可以通过使用低拷贝质粒来部分解决, 其中一些以前曾被描述为商业上可用的 pDEST3210。我们构建了一种新的诱饵质粒 (pTEF GBD), 在TRP1着丝粒基低拷贝质粒中产生 Gal4-DNA-binding 域融合蛋白, 携带 Kanr 抵抗基因, 同时也允许克隆上游和Gal4 DNA 结合领域的下游。
新的高密度 Y2H 片段库.我们构建了一个新的质粒来 Y2H 猎物库, 并利用它建立一个高度复杂的 Y2H 图书馆由随机剪切片段的基因组 DNA 从酿酒酵母。序列分析表明, 该库有100万多个不同的元素, 远比以前描述的酵母基因组 Y2H 质粒库11复杂得多。通过这个新的库, 我们能够证明 DEEPN 工作流足够健壮, 能够以可靠和可重现的方式容纳许多不同质粒的复杂库。

<table><tbody><tr><td>Illumina HiSeq 4000</td><td>Illumina</td><td></td><td>deep sequencing platform</td></tr><tr><td>Monoclonal anti-HA antibodies</td><td>Biolegend</td><td>901514</td><td>Primary Antibody to detect expression of HA in pGal4AD constructs</td></tr><tr><td>Polyclonal anti-myc antibodies</td><td>QED Biosciences Inc</td><td>18826</td><td>Primary Antibody to detect expression of MYC in pTEF-GBD constructs</td></tr><tr><td>NarI</td><td>New England BioLabs</td><td>R0191S</td><td></td></tr><tr><td>EcoRI-HF</td><td>New England BioLabs</td><td>R3101S</td><td></td></tr><tr><td>BamHI-HF</td><td>New England BioLabs</td><td>R3236S</td><td></td></tr><tr><td>XhoI</td><td>New England BioLabs</td><td>R0146S</td><td></td></tr><tr><td>Polyethylene Glycol 3350, powder</td><td>J.T. Baker</td><td>U2211-08</td><td></td></tr><tr><td>Salmon Sperm DNA</td><td>Trevigen, Inc sold by Fisher Scientific</td><td>50-948-286</td><td>carrier DNA for yeast transformation section 3.2.1.</td></tr><tr><td>Kanamycin Monosulfate</td><td>Research Products International</td><td>K22000</td><td></td></tr><tr><td>LE Agarose</td><td>GeneMate</td><td>E-3120-500</td><td>used for making DNA agarose gels</td></tr><tr><td>Sodium Chloride</td><td>Research Products International</td><td>S23025</td><td></td></tr><tr><td>Tryptone</td><td>Research Products International</td><td>T60060</td><td></td></tr><tr><td>D-Sorbitol</td><td>Research Products International</td><td>S23080</td><td></td></tr><tr><td>Lithium Acetate Dihydrate</td><td>MP Biomedicals</td><td>155256</td><td></td></tr><tr><td>Calcium Chloride</td><td>ThermoFisher</td><td>C79</td><td></td></tr><tr><td>EDTA Sodium Salt</td><td>Research Products International</td><td>E57020</td><td></td></tr><tr><td>Yeast Extract Powder</td><td>Research Products International</td><td>Y20020</td><td></td></tr><tr><td>Yeast Nitrogen Base (ammonium sulfate) w/o amino acids</td><td>Research Products International</td><td>Y20040</td><td></td></tr><tr><td>CSM-Trp-Leu+40ADE</td><td>Formedium</td><td>DCS0789</td><td></td></tr><tr><td>CSM-Trp-Leu-His+40ADE</td><td>Formedium</td><td>DCS1169</td><td></td></tr><tr><td>CSM-Leu-Met</td><td>Formedium</td><td>DCS0549</td><td></td></tr><tr><td>CSM-Trp-Met</td><td>Bio 101, Inc</td><td>4520-922</td><td></td></tr><tr><td>L-Methionine</td><td>Formedium</td><td>DOC0168</td><td></td></tr><tr><td>Adenine</td><td>Research Products International</td><td>A11500</td><td></td></tr><tr><td>D-(+)-Glucose</td><td>Research Products International</td><td>G32045</td><td></td></tr><tr><td>Bacto Agar</td><td>BD</td><td>214010</td><td>used for making media plates in section 1</td></tr><tr><td>Peptone</td><td>Research Products International</td><td>P20240</td><td></td></tr><tr><td>3-amino-1,2,4 Triazole</td><td>Sigma</td><td>A8056</td><td></td></tr><tr><td>2-Mercaptoehanol (BME)</td><td>Sigma-Aldrich</td><td>M6250</td><td></td></tr><tr><td>Zymolyase 100T</td><td>USBiological</td><td>Z1004</td><td></td></tr><tr><td>Potassium phosphate dibasic</td><td>Sigma</td><td>P8281</td><td></td></tr><tr><td>Phenol:Chloroform:IAA</td><td>Ambion</td><td>AM9732</td><td></td></tr><tr><td>Ammonium Acetate</td><td>Sigma-Aldrich</td><td>238074</td><td></td></tr><tr><td>Ethanol</td><td>Decon Laboratories, INC</td><td>2716</td><td></td></tr><tr><td>RNAse A</td><td>ThermoFisher</td><td>EN0531</td><td></td></tr><tr><td>Urea</td><td>Research Products International</td><td>U20200</td><td></td></tr><tr><td>SDS</td><td>Research Products International</td><td>L22010</td><td></td></tr><tr><td>glycerol</td><td>Sigma Aldrich</td><td>G5516</td><td></td></tr><tr><td>Tris-HCl</td><td>Gibco</td><td>15506-017</td><td></td></tr><tr><td>bromophenol blue</td><td>Amresco</td><td>449</td><td></td></tr><tr><td>Gibson Assembly Cloning Kit</td><td>New England Biolabs</td><td>E5510S</td><td>Rapid assembly method for cloning of plasmids in section 2</td></tr><tr><td>NEBNext High-Fidelity 2x PCR Master Mix</td><td>New England Biolabs</td><td>M0541S</td><td>Used for amplification of products for Gibson Assembly in Section 2.3 as well assample preparation for DEEPN deep sequencing in section 6.2.1</td></tr><tr><td>Ethidium Bromide</td><td>Amresco</td><td>0492-5G</td><td></td></tr><tr><td>QIAquick PCR purification kit</td><td>Qiagen</td><td>28104</td><td>Used for purification of pcr products in section 6.2.3</td></tr><tr><td>Qiaquick DNA Gel Extraction Kit</td><td>Qiagen</td><td>28704</td><td>Used for purification of digested pTEF-GBD in section 2.1</td></tr><tr><td>KAPA Hyper Prep kit</td><td>KAPA Biosystems</td><td>KK8500</td><td>preparation kit for deep sequencing</td></tr><tr><td>Codon optimization</td><td>http://www.jcat.de</td><td></td><td></td></tr><tr><td>Codon optimization</td><td>https://www.idtdna.com/CodonOpt</td><td></td><td></td></tr><tr><td>gBlocks</td><td>Integrated DNA Technologies</td><td></td><td>DNA fragments used for cloning in Section 2.2</td></tr><tr><td>Strings</td><td>Thermofisher</td><td></td><td>DNA fragments used for cloning in Section 2.2</td></tr><tr><td>GenCatch Plasmid DNA mini-prep Kit</td><td>EPOCH Life Sciences</td><td></td><td>Used to prepare quantities of DNA in Section 2.3</td></tr><tr><td>Covaris E220</td><td>Covaris</td><td></td><td>high performance ultra-sonicator in section 7</td></tr><tr><td>oligo nucelotide 5&amp;rsquo;- CGGTCTT&lt;br/&gt; CAATTTCTCAAGTTTCAG -3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>used for pcr amplification and sequencing 5&#039; insert pTEF-GBD during plasmid construction</td></tr><tr><td>oligo nucelotide 5&amp;rsquo;-GAGTAACG&lt;br/&gt; ACATTCCCAGTTGTTC-3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>used for pcr amplification and sequencing 5&#039; insert pTEF-GBD during plasmid construction</td></tr><tr><td>oligo nucelotide 5&amp;rsquo;-CACCGTAT&lt;br/&gt; TTCTGCCACCTCTTCC-3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>used for pcr amplification and sequencing 3&#039; insert pTEF-GBD during plasmid construction</td></tr><tr><td>oligo nucelotide 5&amp;rsquo;-GCAACCGC&lt;br/&gt; ACTATTTGGAGCGCTG-3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>used for pcr amplification and sequencing 3&#039; insert pTEF-GBD during plasmid construction</td></tr><tr><td>oligonucleotide 5&amp;rsquo;-GTTCCGATG&lt;br/&gt; CCTCTGCGAGTG-3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>5&#039; Pimer used for insert amplification of pGAL4AD</td></tr><tr><td>oligonucelotide 5&amp;rsquo;-GCACATGCT&lt;br/&gt; AGCGTCAAATACC-3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>3&#039; Pimer used for insert amplification of pGAL4AD</td></tr><tr><td>oligonucelotide 5&amp;rsquo;-ACCCAAGCA&lt;br/&gt; GTGGTATCAACG-3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>5&#039; Pimer used for insert amplification of pGADT7</td></tr><tr><td>oligonucelotide 5&amp;rsquo;- TATTTAGA&lt;br/&gt; AGTGTCAACAACGTA -3&amp;rsquo;</td><td>Integrated DNA Technologies or Thermofisher</td><td></td><td>3&#039; Pimer used for insert amplification of pGADT7</td></tr><tr><td>PJ69-4A MatA yeast strain</td><td>http://depts.washington.edu/yeastrc/ James P, Halladay J, Craig EA: Genomic Libraries and a host strain designed for highly efficient two-hybrid selection in yeast. GENETICS 1996 144:1425-1436</td><td></td><td>MATA leu2-3,112 ura3-52 trp1-901 his3-200 gal4D, gal80D, GAL-ADE2 lys2::GAL1-HIS3 met2::GAL7</td></tr><tr><td>pTEF-GBD</td><td>Dr. Robert Piper Lab</td><td></td><td>Gal4-DNA binding doimain expression plasmid</td></tr><tr><td>pGal4AD (pPL6343)</td><td>Dr. Robert Piper Lab</td><td></td><td>Gal4-activation domain expression plasmid</td></tr><tr><td>100 mm petri dishes</td><td>Kord-Vallmark sold by VWR</td><td>2900</td><td></td></tr><tr><td>125 mL PYREX Erlenmeyer flask</td><td>Fisher Scientific</td><td>S63270</td><td></td></tr><tr><td>250 mL PYREX Erlenmeyer flask</td><td>Fisher Scientific</td><td>S63271</td><td></td></tr><tr><td>1,000 mL PYREX Erlenmeyer flask</td><td>Fisher Scientific</td><td>S63274</td><td></td></tr><tr><td>2,000 mL PYREX Erlenmeyer flask</td><td>Fisher Scientific</td><td>S63275</td><td></td></tr><tr><td>20 X 150 mm Disposable Culture Tube</td><td>Thermofisher</td><td>14-961-33</td><td></td></tr><tr><td>pipet-aid</td><td>Drummond</td><td>4-000-100</td><td></td></tr><tr><td>5 mL Serological Pipette</td><td>Denville</td><td>P7127</td><td></td></tr><tr><td>10 mL Serological Pipette</td><td>Denville</td><td>P7128</td><td></td></tr><tr><td>25 mL Serological Pipette</td><td>Denville</td><td>P7129</td><td></td></tr><tr><td>1,000 mL PYREX Griffin Beaker</td><td>Fisher Scientific</td><td>02-540P</td><td></td></tr><tr><td>1,000 mL PYREX Reuasable Media Storage Bottle</td><td>Fisher Scientific</td><td>06-414-1D</td><td></td></tr><tr><td>1,000 mL graduated cylinder</td><td>Fisher Scientific</td><td>08-572-6G</td><td></td></tr><tr><td>SpectraMax 190</td><td>Molecular Devices</td><td></td><td>used to measure the Optical Density of cells</td></tr><tr><td>NanoDrop 2000</td><td>Thermo Scientific</td><td>ND-2000</td><td>Spectrophotometer used to quantify amount of DNA</td></tr><tr><td>Electronic UV transilluminator</td><td>Ultra Lum</td><td>MEB 20</td><td>used to visualize DNA in an Ethidium Bromide agarose gel</td></tr><tr><td>P1000 Gilson PIPETMAN</td><td>Fisher Scientific</td><td>F123602G</td><td></td></tr><tr><td>P200 Gilson PIPETMAN</td><td>Fisher Scientific</td><td>F123601G</td><td></td></tr><tr><td>P20 Gilson PIPETMAN</td><td>Fisher Scientific</td><td>F123600G</td><td></td></tr><tr><td>P10 Gilson PIPETMAN</td><td>Fisher Scientific</td><td>F144802G</td><td></td></tr><tr><td>1250 &amp;micro;L Low Retention Pipette Tips</td><td>GeneMate</td><td>P-1236-1250</td><td></td></tr><tr><td>200 &amp;micro;LLow Retention Pipette Tips</td><td>VWR</td><td>10017-044</td><td></td></tr><tr><td>10 &amp;micro;L XL Low Retention Pipette Tips</td><td>VWR</td><td>10017-042</td><td></td></tr><tr><td>50 mL conical tube</td><td>VWR</td><td>490001-627</td><td></td></tr><tr><td>15 mL conical tube</td><td>VWR</td><td>490001-621</td><td></td></tr><tr><td>cell scraper</td><td>Denville Scientific</td><td>TC9310</td><td></td></tr><tr><td>1.5 mL Microcentrifuge tubes</td><td>USA Scientific</td><td>1615-5500</td><td></td></tr><tr><td>HCl</td><td>Fluka Analytical</td><td>318949-1L</td><td></td></tr><tr><td>NaOH</td><td>J.T. Baker</td><td>5674-02</td><td></td></tr><tr><td>Wooden applicators</td><td>Solon Care</td><td>55900</td><td></td></tr><tr><td>Eppendorf microcentrifuge 5424</td><td>Fisher Scientific</td><td>05-400-005</td><td>microcentrifuge</td></tr><tr><td>Sorvall ST16R</td><td>Thermo Fisher Scientific</td><td>75004381</td><td>benchtop centrifuge</td></tr><tr><td>Amersham ECL Rabbit IgG, HRP-linked whole Ab (from donkey)</td><td>GE Healthcare</td><td>NA934-1ML</td><td>Secondary Antibody</td></tr><tr><td>Amersham ECL Mouse IgG, HRP-linked whole Ab (from sheep)</td><td>GE Healthcare</td><td>NA931-1ML</td><td>Secondary Antibody</td></tr><tr><td>SuperSignal West Pico Chemiluminescent Substrate</td><td>Thermo Fisher Scientific</td><td>34080</td><td>ECL detection solution</td></tr><tr><td>Isotemp Incubator</td><td>Thermo Fisher Scientific</td><td></td><td>Incubator</td></tr><tr><td>Mutitron 2</td><td>INFORS HT</td><td></td><td>Shaking incubator</td></tr><tr><td>Isotemp Digital-Control Water Bath Model 205</td><td>Fisher Scientific</td><td></td><td>water bath</td></tr><tr><td>Y2H mouse cDNA library in Y187 (pan tissue)</td><td>Clontech</td><td>630482</td><td>commercially available cDNA Library</td></tr><tr><td>Y2H mouse cDNA library in Y187 (mouse brain)</td><td>Clontech</td><td>630488</td><td>commercially available cDNA Library</td></tr><tr><td>pGADT7 AD Vector</td><td>Clontech</td><td>630442</td><td>commercially available AD Vector housing many cDNA libraries</td></tr><tr><td>pGBKT7 DNA-BD Vector</td><td>Clontech</td><td>630443</td><td>commercially available DNA-BD Vector</td></tr><tr><td>Biolase DNA Polymerase</td><td>Bioline</td><td>BIO-21042</td><td>DNA polymerase used for section 2.4</td></tr><tr><td>GeneMate GCL-60 Thermal Cycler</td><td>BioExpress</td><td>P-6050-60</td><td>pcr machine</td></tr><tr><td>TempAssure 0.5 mL PCR tubes</td><td>USA Scientific</td><td>1405-8100</td><td></td></tr></tbody></table>

a yeast 2-hybrid screen in batch to compare protein interactions

用酵母 2-杂交法筛选蛋白质-蛋白质相互作用长期以来一直是一个有效的工具, 但它的使用在很大程度上仅限于发现高亲和性的 interactors 在互动的候选库中高度丰富。以传统的形式, 酵母 2-杂交试验可以产生太多的菌落分析时进行低严格的, 在那里可能发现低亲和 interactors。此外, 如果没有对同一图书馆进行全面和彻底的讯问, 对不同的诱饵质粒, 就无法进行比较分析。虽然这些问题中的一些可以使用阵列的牺牲品库来解决, 但操作此类屏幕所需的成本和基础设施却是令人望而却步的。作为替代, 我们已经适应了酵母 2-杂交检测, 同时发现在一个单一的屏幕上的许多瞬态和静态蛋白质相互作用的一个战略称为 DEEPN (动态富集评估蛋白质网络), 这采用高通量 DNA 测序和计算来跟踪编码相互作用伙伴的质粒种群的进化。在这里, 我们描述了定制的试剂和协议, 使 DEEPN 屏幕易于执行和经济高效。

Y2H 检测被广泛用于寻找蛋白质: 蛋白质相互作用和几个适应和系统已经开发。在大多数情况下, 同样的考虑, 帮助确保成功的这些以前的方法是重要的 DEEPN。一些重要的基准包括: 确保 DNA 结合领域融合蛋白的表达, 确保在 diploids 的低背景下, 他 + 生长在含有与空捕食质粒感兴趣的诱饵, 诱饵的交配效率高含有马来酵母与库含 MATalpha 酵母, 最后, 低严格的条件, 使人口增长的条...

Watch this Scientific Journal Video about A Yeast 2-Hybrid Screen in Batch to Compare Protein Interactions at JoVE.com

A Yeast 2-Hybrid Screen in Batch to Compare Protein Interactions

酵母 2-混合筛在批次中比较蛋白质相互作用

酵母 2-混合筛的分批处理可以直接比较多饵蛋白与高度复杂的猎物融合蛋白的相互作用。在这里, 我们描述了精制方法, 新试剂, 以及如何实现这些屏幕的使用。

Screening for protein-protein interactions using the yeast 2-hybrid assay has long been an effective tool, but its use has largely been limited to the ...

a-yeast-2-hybrid-screen-in-batch-to-compare-protein-interactions

Research

JoVE Journal

Biochemistry

13.3K 次观看.  University of Iowa. 酵母 2-混合筛的分批处理可以直接比较多饵蛋白与高度复杂的猎物融合蛋白的相互作用。在这里, 我们描述了精制方法, 新试剂, 以及如何实现这些屏幕的使用。

视频: A Yeast 2-Hybrid Screen in Batch to Compare Protein Interactions

A Modified Yeast-one Hybrid System for Heteromeric Protein Complex-DNA Interaction Studies

Over the years, the yeast one-hybrid assay has proven to be an important technique for the identification and validation of physical interactions between proteins such as transcription factors (TFs) and their DNA target. The method presented here utilizes the underlying concept of the Y1H but is modified further to study and validate protein complexes binding to their target DNA. Hence, it is referred to as the modified yeast one-hybrid (Y1.5H) assay. This assay is cost effective and can be easily performed in a regular laboratory setting. Albeit using a heterologous system, the described method could be a valuable tool to test and validate the heteromeric protein complex binding to their DNA target(s) for functional genomics in any system of study, especially plant genomics.

The modified yeast one-hybrid assay described here is an extension of the classical yeast one-hybrid (Y1H) assay to study and validate the heteromeric protein complex-DNA interaction in a heterologous system for any functional genomics study.

用于异构蛋白复合物 -  DNA相互作用研究的修饰的酵母一杂交系统

Over the years, the yeast one-hybrid assay has proven to be an important technique for the identification and validation of physical interactions between ...

科研

生物化学

Informatic Analysis of Sequence Data from Batch Yeast 2-Hybrid Screens

We have adapted the yeast 2-hybrid assay to simultaneously uncover dozens of transient and static protein interactions within a single screen utilizing high-throughput short-read DNA sequencing. The resulting sequence datasets can not only track what genes in a population that are enriched during selection for positive yeast 2-hybrid interactions, but also give detailed information about the relevant subdomains of proteins sufficient for interaction. Here, we describe a full suite of stand-alone software programs that allow non-experts to perform all the bioinformatics and statistical steps to process and analyze DNA sequence fastq files from a batch yeast 2-hybrid assay. The processing steps covered by these software include: 1) mapping and counting sequence reads corresponding to each candidate protein encoded within a yeast 2-hybrid prey library; 2) a statistical analysis program that evaluates the enrichment profiles; and 3) tools to examine the translational frame and position within the coding region of each enriched plasmid that encodes the interacting proteins of interest.

Deep sequencing of yeast populations selected for positive yeast 2-hybrid interactions potentially yields a wealth of information about interacting partner proteins. Here, we describe the operation of specific bioinformatics tools and customized updated software to analyze sequence data from such screens.

间歇酵母 2-混合筛序列数据的信息化分析

We have adapted the yeast 2-hybrid assay to simultaneously uncover dozens of transient and static protein interactions within a single screen utilizing ...

遗传学

A Comparative Approach to Characterize the Landscape of Host-Pathogen Protein-Protein Interactions

Significant efforts were gathered to generate large-scale comprehensive protein-protein interaction network maps. This is instrumental to understand the pathogen-host relationships and was essentially performed by genetic screenings in yeast two-hybrid systems. The recent improvement of protein-protein interaction detection by a Gaussia luciferase-based fragment complementation assay now offers the opportunity to develop integrative comparative interactomic approaches necessary to rigorously compare interaction profiles of proteins from different pathogen strain variants against a common set of cellular factors.
This paper specifically focuses on the utility of combining two orthogonal methods to generate protein-protein interaction datasets: yeast two-hybrid (Y2H) and a new assay, high-throughput Gaussia princeps protein complementation assay (HT-GPCA) performed in mammalian cells.
A large-scale identification of cellular partners of a pathogen protein is performed by mating-based yeast two-hybrid screenings of cDNA libraries using multiple pathogen strain variants. A subset of interacting partners selected on a high-confidence statistical scoring is further validated in mammalian cells for pair-wise interactions with the whole set of pathogen variants proteins using HT-GPCA. This combination of two complementary methods improves the robustness of the interaction dataset, and allows the performance of a stringent comparative interaction analysis. Such comparative interactomics constitute a reliable and powerful strategy to decipher any pathogen-host interplays.

This article focuses on the identification of high-confident interaction datasets between host and pathogen proteins using a combination of two orthogonal methods: yeast two-hybrid followed by a high-throughput interaction assay in mammalian cells called HT-GPCA.

比较方法来表征景观的宿主 - 病原体蛋白 - 蛋白相互作用

Significant efforts were gathered to generate  large-scale comprehensive protein-protein interaction network maps. This is  instrumental to understand the ...

免疫与感染

Split-Ubiquitin Based Membrane Yeast Two-Hybrid (MYTH) System: A Powerful Tool For Identifying Protein-Protein Interactions

The fundamental biological and clinical importance of integral membrane proteins prompted the development of a yeast-based system for the high-throughput identification of protein-protein interactions (PPI) for full-length transmembrane proteins. To this end, our lab developed the split-ubiquitin based Membrane Yeast Two-Hybrid (MYTH) system. This technology allows for the sensitive detection of transient and stable protein interactions using Saccharomyces cerevisiae as a host organism. MYTH takes advantage of the observation that ubiquitin can be separated into two stable moieties: the C-terminal half of yeast ubiquitin (Cub) and the N-terminal half of the ubiquitin moiety (Nub). In MYTH, this principle is adapted for use as a 'sensor' of protein-protein interactions. Briefly, the integral membrane bait protein is fused to Cub which is linked to an artificial transcription factor. Prey proteins, either in individual or library format, are fused to the Nub moiety. Protein interaction between the bait and prey leads to reconstitution of the ubiquitin moieties, forming a full-length 'pseudo-ubiquitin' molecule. This molecule is in turn recognized by cytosolic deubiquitinating enzymes, resulting in cleavage of the transcription factor, and subsequent induction of reporter gene expression. The system is highly adaptable, and is particularly well-suited to high-throughput screening. It has been successfully employed to investigate interactions using integral membrane proteins from both yeast and other organisms.

Split-Ubiquitin Based Membrane Yeast Two-Hybrid MYTH System: A Powerful Tool For Identifying Protein-Protein Interactions

MYTH allows the sensitive detection of transient and stable interactions between proteins that are expressed in the model organism Saccharomyces cerevisiae. It has been successfully applied to study exogenous and yeast integral membrane proteins in order to identify their interacting partners in a high throughput manner.

基于分体式泛素膜酵母双杂交（神话）系统：一个强大的工具用于识别蛋白质 - 蛋白质相互作用

The fundamental biological and clinical importance of integral membrane proteins prompted the development of a yeast-based system for the high-throughput ...

生物学

Unravelling the Function of a Bacterial Effector from a Non-cultivable Plant Pathogen Using a Yeast Two-hybrid Screen

Unravelling the molecular mechanisms of disease manifestations is important to understand pathologies and symptom development in plant science. Bacteria have evolved different strategies to manipulate their host metabolism for their own benefit. This bacterial manipulation is often coupled with severe symptom development or the death of the affected plants. Determining the specific bacterial molecules responsible for the host manipulation has become an important field in microbiological research. After the identification of these bacterial molecules, called &#34;effectors,&#34; it is important to elucidate their function. A straightforward approach to determine the function of an effector is to identify its proteinaceous binding partner in its natural host via a yeast two-hybrid (Y2H) screen. Normally the host harbors numerous potential binding partners that cannot be predicted sufficiently by any in silico algorithm. It is thus the best choice to perform a screen with the hypothetical effector against a whole library of expressed host proteins. It is especially challenging if the causative agent is uncultivable like phytoplasma. This protocol provides step-by-step instructions for DNA purification from a phytoplasma-infected woody host plant, the amplification of the potential effector, and the subsequent identification of the plant&#39;s molecular interaction partner with a Y2H screen. Even though Y2H screens are commonly used, there is a trend to outsource this technique to biotech companies that offer the Y2H service at a cost. This protocol provides instructions on how to perform a Y2H in any decently equipped molecular biology laboratory using standard lab techniques.

Bacterial effector proteins are important for establishing successful infections. This protocol describes the experimental identification of proteinaceous binding partners of a bacterial effector protein in its natural plant host. Identifying these effector interactions via yeast two-hybrid screens has become an important tool in unravelling molecular pathogenicity strategies.

从非耕种植物病原菌利用酵母双杂交筛选Unravelling一个细菌效应中的作用

Unravelling the molecular mechanisms of disease manifestations is important to understand pathologies and symptom development in plant science. Bacteria ...

Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin

Progranulin (PGRN), also known as granulin epithelin precursor (GEP), is a 593-amino-acid autocrine growth factor. PGRN is known to play a critical role in a variety of physiologic and disease processes, including early embryogenesis, wound healing 1, inflammation 2, 3, and host defense 4. PGRN also functions as a neurotrophic factor 5, and mutations in the PGRN gene resulting in partial loss of the PGRN protein cause frontotemporal dementia 6, 7. Our recent studies have led to the isolation of PGRN as an important regulator of cartilage development and degradation 8-11. Although PGRN, discovered nearly two decades ago, plays crucial roles in multiple physiological and pathological conditions, efforts to exploit the actions of PGRN and understand the mechanisms involved have been significantly hampered by our inability to identify its binding receptor(s). To address this issue, we developed a modified yeast two-hybrid (MY2H) approach based on the most commonly used GAL4 based 2-hybrid system. Compared with the conventional yeast two-hybrid screen, MY2H dramatically shortens the screen process and reduces the number of false positive clones. In addition, this approach is reproducible and reliable, and we have successfully employed this system in isolating the binding proteins of various baits, including ion channel 12, extracellular matrix protein 10, 13, and growth factor14. In this paper, we describe this MY2H experimental procedure in detail using PGRN as an example that led to the identification of TNFR2 as the first known PGRN-associated receptor 14, 15.

We have modified the conventional yeast two-hybrid screening, an effective genetic tool in identifying protein interaction. This modification markedly shortens the process, reduces the workload, and most importantly, reduces the number of false positives. In addition, this approach is reproducible and reliable.

改良酵母双杂交系统，以确定蛋白与生长因子Progranulin的相互作用

Progranulin (PGRN), also known as granulin epithelin precursor (GEP), is a 593-amino-acid autocrine growth factor. PGRN is known to play a critical role ...

Probing High-density Functional Protein Microarrays to Detect Protein-protein Interactions

High-density functional protein microarrays containing ~4,200 recombinant yeast proteins are examined for kinase protein-protein interactions using an affinity purified yeast kinase fusion protein containing a V5-epitope tag for read-out. Purified kinase is obtained through culture of a yeast strain optimized for high copy protein production harboring a plasmid containing a Kinase-V5 fusion construct under a GAL inducible promoter. The yeast is grown in restrictive media with a neutral carbon source for 6 hr followed by induction with 2% galactose. Next, the culture is harvested and kinase is purified using standard affinity chromatographic techniques to obtain a highly purified protein kinase for use in the assay. The purified kinase is diluted with kinase buffer to an appropriate range for the assay and the protein microarrays are blocked prior to hybridization with the protein microarray. After the hybridization, the arrays are probed with monoclonal V5 antibody to identify proteins bound by the kinase-V5 protein. Finally, the arrays are scanned using a standard microarray scanner, and data is extracted for downstream informatics analysis1,2 to determine a high confidence set of protein interactions for downstream validation in vivo.

Using protein microarrays containing nearly the entire S. cerevisiae proteome is probed for rapid unbiased interrogation of thousands of protein-protein interactions in parallel. This method can be utilized for protein-small molecule, posttranslational modification, and other assays in high-throughput.

探讨高密度功能蛋白微阵列来检测蛋白质 - 蛋白质相互作用

High-density functional protein microarrays containing ~4,200 recombinant yeast proteins are examined for kinase protein-protein interactions using an ...

Genetic and Biochemical Approaches for In Vivo and In Vitro Assessment of Protein Oligomerization: The Ryanodine Receptor Case Study

Oligomerization is often a structural requirement for proteins to accomplish their specific cellular function. For instance, tetramerization of the ryanodine receptor (RyR) is necessary for the formation of a functional Ca2+ release channel pore. Here, we describe detailed protocols for the assessment of protein self-association, including yeast two-hybrid (Y2H), co-immunoprecipitation (co-IP) and chemical cross-linking assays. In the Y2H system, protein self-interaction is detected by &#946;-galactosidase assay in yeast co-expressing GAL4 bait and target fusions of the test protein. Protein self-interaction is further assessed by co-IP using HA- and cMyc-tagged fusions of the test protein co-expressed in mammalian HEK293 cells. The precise stoichiometry of the protein homo-oligomer is examined by cross-linking and SDS-PAGE analysis following expression in HEK293 cells. Using these different but complementary techniques, we have consistently observed the self-association of the RyR N-terminal domain and demonstrated its intrinsic ability to form tetramers. These methods can be applied to protein-protein interaction and homo-oligomerization studies of other mammalian integral membrane proteins.

Genetic and Biochemical Approaches for In Vivo and In Vitro Assessment of Protein Oligomerization: The Ryanodine Receptor Case Study

Oligomerization of the ryanodine receptor, a homo-tetrameric ion channel mediating Ca2+ release from intracellular stores, is critical for skeletal and cardiac muscle contraction. Here, we present complementary in vivo and in vitro methods to detect protein self-association and determine homo-oligomer stoichiometry.

遗传和生物化学方法<em&gt;在体内</em&gt;和<em&gt;体外</em&gt;蛋白齐聚评估:兰尼碱受体案例研究

Oligomerization is often a structural requirement for proteins to accomplish their specific cellular function. For instance, tetramerization of the ...

使用酵母双杂交技术的生物分子相互作用研究 

Isolating Interaction-Null&#47;Impaired Mutants Using the Yeast Two-Hybrid Assay

Protein-protein interactions are one of the most basic processes that underlie biological phenomena. One of the simplest and best ways to understand the role(s) and function(s) of a specific protein-protein interaction is to compare the phenotype of the wild-type (with the relevant protein-protein interaction) and those of mutants that lack the relevant interaction. Therefore, if such mutants can be isolated, they will help to elucidate the related biological processes. The yeast two-hybrid (Y2H) procedure is a powerful approach not only to detect protein-protein interactions but also to isolate interaction-null/impaired mutants. In this article, a protocol is presented to isolate interaction-null/impaired mutants using Y2H technology. First, a mutation library is constructed by combining the polymerase chain reaction and efficient seamless cloning technology, which efficiently excludes the empty vector from the library. Second, interaction-null/impaired mutants are screened by the Y2H assay. Because of a trick in the Y2H vector, undesired mutants, such as those with frameshift and nonsense mutations, are efficiently eliminated from the screening process. This strategy is simple and can, therefore, be applied to any combination of proteins whose interaction can be detected by the two-hybrid system.

作者聚焦:增强酵母中相互作用零突变体的分离

The interactions of biomolecules, such as protein-protein interactions, are the molecular basis of biological functions. If interaction-null/impaired mutants that specifically lack the relevant interaction can be isolated, they will greatly help to understand the function(s) of this interaction. This article presents an efficient way to isolate interaction-null/impaired mutants.

使用酵母双杂交试验分离相互作用无效/受损突变体

Protein-protein interactions are one of the most basic processes that underlie biological phenomena. One of the simplest and best ways to understand the ...

酵母 2-混合筛在批次中比较蛋白质相互作用

摘要

探索更多视频

此视频中的章节

用于异构蛋白复合物 - DNA相互作用研究的修饰的酵母一杂交系统

间歇酵母 2-混合筛序列数据的信息化分析

比较方法来表征景观的宿主 - 病原体蛋白 - 蛋白相互作用

基于分体式泛素膜酵母双杂交（神话）系统：一个强大的工具用于识别蛋白质 - 蛋白质相互作用

从非耕种植物病原菌利用酵母双杂交筛选Unravelling一个细菌效应中的作用

改良酵母双杂交系统，以确定蛋白与生长因子Progranulin的相互作用

探讨高密度功能蛋白微阵列来检测蛋白质 - 蛋白质相互作用

遗传和生物化学方法

使用酵母双杂交试验分离相互作用无效/受损突变体

使用酵母双杂交试验分离相互作用无效/受损突变体